In Eclipse in the Navigator or Project Explorer tab,
right-click the Commerce Cloud server for your server instance
and select Properties.

Select the cartridges you are using for your environment
(the ones that are in your cartridge path, including
bm_instore).

If you are using controllers, and have not already done so,
add the app_storefront_controller cartridge (available in
https://github.com/SalesforceCommerceCloud/sitegenesis) as a project
references, because it needs to be uploaded on the server.

Endless Aisle uses app_storefront_controllers for guard.js.
If you are using controllers on your storefront, you probably
already have uploaded it to your server you can skip this
step.